HELPPPP!!!!
Three students were asked to rewrite the expression 18x³ + 36x³ using a common factor. The rewritten expressions are shown in the table.

Student A 4x³(4+ 9x2)
Student B 3x2(6x + 12x³)
Student C9x³(2 + 4x²)
Part A: Did Student A rewrite the expression correctly using a common factor? Explain.
Part B: Did Student B rewrite the expression correctly using a common factor? Explain.
Part C: Did Student C rewrite the expression correctly using a common factor? Explain.
Part D: Rewrite the expression using a different common factor than what is shown in the table. Choose a common factor that includes a coefficient other than 1 and a variable. Show every step of your work.